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Flyback Transformers (2 – 36, 400 Vdc input)

Input range: Telecom (36 – 72 Vdc)  |  Telecom (36 – 57 Vdc)  |  Telecom extended (10 – 72 Vdc)  |  AC line

If no transformer meets your design criteria, review the application note Using Standard Transformers in Multiple Applications, consult the Coilcraft Structured Design Guide for Switching Transformers for a step-by-step guide to transformer design, or contact Coilcraft for assistance.

Can these transformers be used in different applications or topologies?

Power
(W)
Output L at 0 A
(µH)
Pri : sec
tutrns ratio
Nom
freq. (kHz)
Part number
Click for details
Designed for
2 – 8  Vdc Input
7 – 12 30 – 80 V 4.0 1 : 4 150 NA5743-AL Linear LT8584
7 – 12 9 – 36 V 4.0 1 : 1.33 150 NA6252-AL Linear LT8584
7 – 12 100 – 400 V 4.0 1 : 24 150 NA5920-AL Linear LT8584
2.9 – 32  Vdc Input
2.0 5 V, 0.4 A 2.0 1 : 4 100 TA7608-AL Silicon Labs DC-DC Converter
2.0 5 V, 0.4 A 2.0 1 : 4 100 TA7618-AL Silicon Labs DC-DC Converter
12 12 V, 1 A 12 1 : 0.833 200 NA5889-AL TI TPS55340
3.3  Vdc Input
1.2 12 V, 0.1 A 330 1 : 2 100 DA2420-AL ST Micro STE12PS
1.2 12 V, 0.1 A 330 1 : 2 100 DA2421-AL ST Micro STE12PS
4 – 6  Vdc Input
4.5 5 V / 0.9 A 47 1 : 1 100 S6057-AL TI LM258X (T7)
4.5 5 V / 0.9 A 47 1 : 1 100 S6000-AL TI LM258X (T7)
8.0 5 V, 1.6 A 22 1 : 1 100 Q4435-BL TI LM258X (T1)
8.0 5 V, 1.6 A 22 1 : 1 100 Q4434-BL TI LM258X (T1)
8.4 12 V, 0.35 A
−12 V, 0.35 A
22 1 : 2.5
1 : 2.5
100 Q4436-BL TI LM258X (T2)
8.4 12 V, 0.35 A
−12 V, 0.35 A
22 1 : 2.5
1 : 2.5
100 Q4337-BL TI LM258X (T2)
4.5 – 8.5  Vdc Input
4.0 −48 V, 0.083 A 19 1 : 16 125 FA2469-AL STMicro STLC3075
5 – 20  Vdc Input
0.25 5 V, 50 mA 10 1 : 1 100 CX9721-AL TI TPS61046 Boost Converter
5 – 24  Vdc Input
18.0 5 V, 3.6 A
15 V, 1.2A
−15 V, 1.2A
7.5 1 : 0.5
1 : 1.5
1 : 1.5
100 HA3994-AL Linear LT3751 Cap. Charger
Controller
7 – 24  Vdc Input
2.13 15 V, 0.13 A
9 V, 0.02 A
25 1 : 0.1.25
1 : 0.75
250 TA7788-AL Silicon Labs DC-DC Converter
8 – 18  Vdc Input
48 48 V, 1 A 2.56 1 : 6 300 NA6264-AL TI PMP7899
81 54 V, 1.5 A 10 1 : 2 300 UA7962-AL TI PMP20058
8.5 – 12  Vdc Input
4.0 −48 V, 0.083 A 19 1 : 8 125 FA2470-AL STMicro STLC3075
9 – 20  Vdc Input
4.1 24 V, 0.17 A
72 V, 0.17 A
6 1 : 3
1 : 9
600 IFLY0012L Intersil ISL6401 
10 – 14  Vdc Input
5.0 3.3 V, 1.5 A 25 1 : 0.14 250 GA3431-BL  
5.0 5.0 V, 1.0 A 25 1 : 0.20 250 GA3430-BL  
18 – 36  Vdc Input
7.5 5 V, 1.5 A 60 1 : 0.5 500 MA5237-AL Maxim MAX17498B
15.0 5 V, 1.8 A
12 V, 0.25 A
−12 V, 0.25 A
55 1 : 0.5
1 : 0.167
1 : 0.167
100 Q4437-BL TI LM258X (T5)
15.0 5 V, 1.8 A
12 V, 0.25 A
−12 V, 0.25 A
66 1 : 0.5
1 : 0.167
1 : 0.167
100 Q4338-BL TI LM258X (T5)
15.1 12 V,  0.63 A
−12 V, 0.63 A
65 1 : 1.2
1 : 1.2
100 Q4438-BL TI LM258X (T6)
15.1 12 V,  0.63 A
−12 V, 0.63 A
66 1 : 1.2
1 : 1.2
100 Q4339-BL TI LM258X (T6)
20.0 24 V, 0.833 A 33 1 : 1.85 100 CU8758-AL Maxim MAX17597
33.0 12 V,  0.75 A
−12 V, 0.75 A
 5 V, 3 A
85 1 : 0.35
1 : 0.8
1 : 0.8
100 Q4344-BL TI LM258X (T4)
33.6 12 V, 1.4 A
−12 V, 1.4 A
85 1 : 0.8
1 : 0.8
100 Q4343-BL TI LM258X (T3)
20 – 28  Vdc Input
5 3.3 V, 1.5 A 24 1 : 0.25 250 GA3429-BL Linear LT3573
22 – 26  Vdc Input
50 53 V, 1.0 A 35 1 : 1.4 150 GA3136-BL TI UCC2809
400 Vdc
44 110 V, 0.4 A 800 1 : 0.35 250 GA3502-BL Maxim MAX16801 LED Driver
             

1:0.36
1:0.36
1:0.10
1:0.075
1:0.19
1:0.19
1:0.28
1:0.28
1:0.70
1:0.70
1:0.07
1:0.063
1:0.063
1:0.08
1:0.083
1:0.083
1:0.11
1:0.10
1:0.10
1:0.15
1:0.143
1:0.143
1:0.35
1:0.333
1:0.333
1:0.333
1:0.19
1:0.19
1:0.262
1:0.262
1:0.667
1:0.667
1:0.13
1:0.15
1:0.104
1:0.042
1:0.042
1:0.33
1:0.12
1:0.40
1:0.20
1:0.167
1:050
1:1
1:0.20
1:0.167
1:0.28
1:0.07
1:0.08
1:0.11
1:0.166
1:0.25
1:0.15
1:0.25
1:0.25
1:0.35
1:0.50
1:0.57
1:0.567
1:0.67
1:0.667
1:0.31
1:0.23
1:0.19
1:0.40
1:1
1:0.09
1:0.14
1:0.33
1:0.24
1:0.56
1:0.67

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Updated: March 14, 2017